Synthesis and thermal behavior of [Li(thf)3(μ-Cl)La{N(SiMe3)2}3] and its investigation as spin-coating precursor for lanthanum-based layer formation

作     者：Andrea Preuβ Elaheh Pousaneh Julian Noll Tobias Rüffer Alexaner Jakob Lutz Mertens Michael Mehring Heinrich Lang Andrea PreuB;Elaheh Pousaneh;Julian Noll;Tobias Rüffer;Alexaner Jakob;Lutz Mertens;Michael Mehring;Heinrich Lang

作者机构：Technische Universitat Chemnitz Faculty of Natural Sciences Institute of Chemistry Inorganic Chemistry 09107 Chemnitz Germany Technische Universitat Chemnitz Faculty of Natural Sciences Institute of Chemistry Coordination Chemistry 09107 Chemnitz Germany 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2018年第36卷第5期

页      面：537-543页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0708[理学-地球物理学] 09[农学] 0703[理学-化学] 0901[农学-作物学] 070301[理学-无机化学] 

基　　金：Project supported by the German Research Foundation(DFG)within the Cluster of Excellence "Center for Advancing Electronics Dresden" and within the Federal Cluster of Excellence EXC 1075 "MERGE Technologies for Multifunctional Lightweight Structures" 

主　　题：Lanthanum Amide Thermogravimetry Solid state structure Spin-coating Rare earths 

摘      要：The lanthanum（Ⅲ） complex [Li（thf）3（μ-CI）La{N（SiMe3）2}3]（3） was obtained by the reaction of LaCl3 with three equiv of Li[N（SiMe3）2]3 in a tetrahydrofuran solution. The molecular structure of 3 in the solid state was characterized by a tetracoordinated anionic lanthanide（Ⅲ） amide in form of an adduct with LiCl（thf）3 as evidenced by single crystal X-ray structure analysis. In order to study the suitability of 3 as a precursor for the deposition of La2O3/LiLaSiO4 by thin layer deposition techniques,its thermal behavior was investigated by thermogravimetry（TG） and TG-MS-coupled studies. TG studies show a two-step decomposition process, whereby volatile decomposition products can be detected during the second decomposition step. TG measurements under an atmosphere of oxygen produced La2O3, Calcination processes of 3 under ambient atmosphere for 10 h at 1000 ℃ gave La2O3 and LiLaSiO4,which was confirmed by PXRD studies. Metal-organic 3 was applied as spin-coating precursor for La2O3 thin film formation giving the as-deposited layers nearly crack-free.